Some Questions About My 2011 Rail

I got my rail about a couple weeks ago. When I put a tank on, it started leaking from the steel breaded hose, which then I ordered a macro line kit for it. So when I got it, I put it on and put a tank on. I noticed it was leaking air from the body? But I shot it a couple of times and it went away but shot it some more and it came back again.

Another thing when I was shooting it, I felt the frame on the back where the bolt is and it was pretty warm, so I was just wondering if that was normal?